Boring tool



FIG. 1 is an environmental perspective view of a boring tool showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view with the left side being a mirror image thereof;

FIG. 5 is a top plan thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line showing of the human figure in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. The broken line showing of the human figure in FIGS. 1, 4, 5, and 6 is for illustrative purposes only, and forms no part of the claimed design. 

The ornamental design for a boring tool, as shown and described. 